Motion picture projecting system

• US 4,154,514 A
• Filed: 11/17/1976
• Issued: 05/15/1979
• Est. Priority Date: 11/17/1976
• Status: Expired due to Term

• Current Assignee: John S. Harvey
• Original Assignee: John S. Harvey
• Inventors: Harvey, John S.
• Primary Examiner(s): Hayes, Monroe H.
• Application Number:
  US05/742,420
• Time in Patent Office: 909 Days
• Field of Search: 352/69, 352/86, 350/191
• US Class Current: 352/69
• CPC Class Codes: G02B 30/40 giving the observer of a single two-dimensional [2D] image a perception of depth
• CPC Class Codes: G03B 37/00 Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe

Abstract

A system for projecting and exhibiting motion pictures creating for the viewer illusory impressions of depth and participation. The system employs a single projector equipped with an anamorphic lens. In preferred embodiment the projector, using a standard 35 mm anamorphic film, projects onto a deeply curved screen. The arrangement is such that the system uniquely functions to produce good image focus over the entire surface of the screen to which the image is applied, lending a viewer a decidedly improved depth of perception.

Claims

1. A motion picture projecting system comprising a single projector including means for projecting images conventionally from anamorphic film through an anamorphic lens and a screen positioned to have images so projected cast thereon, said screen having a viewing surface which is deeply curved, the lateral extent of the curve of said screen being limited to a range of 138°

to 150° and

its viewing surface being positioned and configured to intercept the total of each image in advance of what would be considered its normal focal plane and to have the image essentially fill its viewing surface whereby to have the elements of said image disposed thereon in a manner to lend a depth of perception and a sense of participation on the part of a viewer.

2. A motion picture projecting system as in claim 1 wherein said projector is a standard 35 millimeter projector utilizing anamorphic film each frame of which embodies a single image and there is a single anamorphic lens providing that there is a single image projected in respect to each representation on said film.

3. A motion picture projecting system as in claim 1 characterized in that said projector includes primary lens means and a single anamorphic lens means in series relation providing that the projector utilizes standard anamorphic film wherein the image representations are provided in successive following relation, providing thereby that projection produces a succession of single images each one of which is impacted on said screen viewing surface in advance of what would normally be considered its normal focal plane and the curve of said viewing surface presented to and receiving said image being deeply concave and formed on a radius to provide that the elements of each image which impact thereon include portions lying in adjacent and separate planes, creating thereby, an impression of depth to the various elements of the image.

4. A motion picture projecting system as in claim 3 wherein the relative positions of said single projector and said viewing surface are established to give the viewer an impression that the vertical extent of the screen at its center is less than that at its lateral extremities.

5. A motion picture projecting system as in claim 1 wherein the arcuate lateral extent of said screen viewing surface is approximately 146°

of a circle.

6. A motion picture projecting system as in claim 1 wherein the arcuate lateral extent of said screen defines a chord between its lateral extremities and the curve of said viewing surface is formed on a radius the dimension of which is slightly greater than one-half that of said chord.

7. A motion picture projecting system as in claim 1 wherein said screen is provided with a lenticular type viewing surface.

8. A motion picture projecting system as in claim 1 wherein said screen viewing surface has a width to height ratio not less than 2.22 to 1 and not more than 2.32 to 1.

9. A motion picture projecting system as in claim 8 wherein said ratio is 2.25 to 1.

10. A motion picture projecting system as in claim 8 wherein said viewing surface has an arcuate lateral extent corresponding to 146°

of a circle and the radius on which it is formed has a dimension approximately one-half that of its chord.

11. A motion picture projecting system as in claim 1 wherein said viewing surface is concave, continuous in nature and lenticular in character.